Escreve a reação de precipitação que ocorre entre as soluções aquosas de nitrato de prata e de cloreto de cálcio.

When a chemist collects hydrogen gas over water, she ends up with a mixture of hydrogen and water vapor in her collecting bottle if the pressure in the collecting bottle is 97.1 kilopascals and the vapor pressure of the water is 3 2 kilopascals, what is the partial pressure of the hydrogen?

Fill in the blanks for the following statements: the rms speed of the molecules in a sample of h2 gas at 300 k will be times larger than the rms speed of o2 molecules at the same temperature, and the ratio µrms (h2) / µrms (o2) with increasing temperature. a not enough information is given to answer this question b sixteen, will not change c four, will not change d four, will increase e sixteen, will decrease

Asap which of the following are examples of chemical changes -silver tarnishes - a sheet of copper is pounded into the shape of a bowl - barium melts at 725° c - hydrogen reacts with oxygen to form water